Emissions Fail :( Help! - CEL P0420

So I recently bought me a new (new to me at least) 2003 Volkswagen GTI 1.8t Tornado Red anyways... I am trying to pass emissions testing (State of Oregon) and get the car registered. So heres where the problems started...

I took it to DEQ to do an emissions test and it failed, the tech said that I needed to do a drive cycle to put all of the sensors in a ready state. I was working with radio and pulled the battery lead so that was probably why the sensors weren't ready. So I drove to Portland (50 mi round trip) and figured that would complete the drive cycle, then the CEL came on... P0420 Catalyst System Efficiency Below Threshold (Bank 1).

So I reset the CEL (this also resets the Drive Cycle) and drove it 100+ miles, all systems are ready except the following according to DEQ:

Fixed it!

Turns out that someone put a test pipe on the car and took out the cat entirely. I was able to pass emissions like 5th time . I just ordered a wheel spacer so hopefully that should fix the P0420 I've been throwing.